(a) Funds apportioned pursuant to §1212.7 will remain available for expenditure as follows:

(1) Funds originally apportioned under 23 U.S.C. 104(b)(5)(A) will remain available until the end of the fiscal year succeeding the fiscal year in which the funds are apportioned.

(2) Funds originally apportioned under 23 U.S.C. 104(b)(1), 104(b)(2), 104(b)(5)(B), or 104(b)(6) will remain available until the end of the third fiscal year succeeding the fiscal year in which the funds are apportioned.

(b) Sums apportioned to a State pursuant to §1212.7 and not obligated at the end of the periods defined in §1212.8(a), shall lapse or, in the case of funds apportioned under 23 U.S.C. 104(b)(5), shall lapse and be made available by the Secretary for projects in accordance with 23 U.S.C. 118(b).